Reasons and Solutions for Unmounted SD Card

There is no one particular reason for unmounted SD card on Android device. It can be due to one or even more reasons as following:

For SD card issues: If your Android can't read your SD card, the problem could stem from the SD card itself, and not your handset. Your SD card might have been corrupt due to many reasons like improper usage, virus infection and many more. To make sure about this, connect your SD card in another handset, or use a reader to plug your SD card into a computer. If you are unable to locate the SD card using another handset or a computer, the SD card is faulty and will need replaced.

For hardware issues: Remove and reinstall the SD to make sure you have it correctly installed. If the SD card sticks out, or does not snap into place. If installed correctly, the SD card will fit under the metal cover, securely in the slot. Now, your SD card should get recognized.

For software issues: Issues with the operating system will also prevent your Android card from reading the SD card. There're 2 ways for your selection:

Android devices have a setting that allows you to mount or unmount a SD card, which will format the card for use on your handset. Go the settings menu on your device. Locate the "Unmount SD card" option and tap to unmounts your SD card. After the handset finishes unmounting your SD card, tap the option to "Mount SD card." This may correct any software issues.

Before starting, create a backup of the contents of the memory card on your computer. Then pull out your phone's SD card, put it in a memory card reader and plug it into the computer. Open My Computer and right-click the drive that shows represents your memory card. Select "Format…" option. Click File system and select "NTFS" or "exFAT" or "FAT32". Then click "Start" button. Now copy the backed up files back to the SD card. Insert the card into the device, boot into recovery to check if the problem is fixed.